Hi everyone,
I think I have a similar problem. I'm trying to program a web server on a Arduino Ethernet rev3 without PoE.
(sorry for my english, I'm French 
)
Here is my code, from an example on startingelectronics.com. As you can see, when a client connects to the board, the server send him html lines. Then if you reach the board from a web browser, you get a page with a little text.
#include <SPI.h>
#include <Ethernet.h>
// MAC address from Ethernet shield sticker under board
byte mac[] = { 0x90, 0xA2, 0xDA, 0x0F, 0x51, 0xB5 };
IPAddress ip(192, 168, 0, 1); // IP address, may need to change depending on network
EthernetServer server(8888); // create a server at port 80
void setup()
{
Ethernet.begin(mac, ip); // initialize Ethernet device
server.begin(); // start to listen for clients
}
void loop()
{
EthernetClient client = server.available(); // try to get client
if (client) { // got client?
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) { // client data available to read
char c = client.read(); // read 1 byte (character) from client
// last line of client request is blank and ends with \n
// respond to client only after last line received
if (c == '\n' && currentLineIsBlank) {
// send a standard http response header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close");
client.println();
// send web page
client.println("<!DOCTYPE html>");
client.println("<html>");
client.println("<head>");
client.println("<title>Arduino Web Page</title>");
client.println("</head>");
client.println("<body>");
client.println("<h1>Hello from Arduino!</h1>");
client.println("<p>A web page from the Arduino server</p>");
client.println("</body>");
client.println("</html>");
break;
}
// every line of text received from the client ends with \r\n
if (c == '\n') {
// last character on line of received text
// starting new line with next character read
currentLineIsBlank = true;
}
else if (c != '\r') {
// a text character was received from client
currentLineIsBlank = false;
}
} // end if (client.available())
} // end while (client.connected())
delay(1); // give the web browser time to receive the data
client.stop(); // close the connection
} // end if (client)
}
When I try to connect (with Chrome), it doesn't work. In the details I can see the error code: ERR_CONNECTION_REFUSED
the telnet function doesn't report "connection refused" but "connection failed". It seems that it's a similar problem than you